1. Department of Horticulture Industry, Wonkwang University, Iksan 54538, Korea
2. Department of Horticulture, Chonnam National University, Gwangju 61186, Korea
3. Institute of Life Science and Natural Resources, Wonkwang University, Iksan 54538, Korea
4. Urban Agriculture Division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Korea